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Finding the Fourth Proportional to 2,668.17, 4,004.01 and 936.75

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Solution

The fourth proportional to 2,668.17, 4,004.01 and 936.75 is: 1,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.17 : 4,004.01 = 936.75 : x
  2. Step 2: Convert to fraction form
    2,668.17/4,004.01 = 936.75/x
  3. Step 3: Cross multiply
    2,668.17x = 4,004.01 × 936.75
  4. Step 4: Simplify right side
    2,668.17x = 3,750,756.37
  5. Step 5: Solve for x
    x = 3,750,756.37/2,668.17
  6. Step 6: Final answer
    x = 1,405.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.